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$115+ Cheap flights from Medford to Ontario (MFR - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
MFR — ONT
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Medford to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Medford (MFR) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2025.

Round-trip from

$195
(Delta)

One-way from

$115
(Kiwi.com)

Popular in

December

Cheapest in

June

Average price

$399
From Medford to Ontario
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One-way flight from Medford to Ontario
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Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Medford to Ontario

Cheapest flights from Medford to Ontario
Explore the most affordable flight options available from Medford to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:24 pmMFR - ONT
1 stop5h 17mDelta
Tue 10/2811:48 amONT - MFR
1 stop4h 56mDelta
Deal found 9/16$195
This Delta deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:00 amMFR - ONT
1 stop5h 08mDelta
Thu 10/234:35 pmONT - MFR
1 stop7h 14mDelta
Deal found 9/16$246
This Hawaiian Airlines deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:48 amMFR - ONT
1 stop6h 49mHawaiian Airlines
Tue 10/286:00 amONT - MFR
1 stop5h 30mHawaiian Airlines
Deal found 9/17$258
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/112:13 pmMFR - ONT
1 stop3h 36mUnited Airlines
Tue 10/141:53 pmONT - MFR
1 stop6h 36mUnited Airlines
Deal found 9/15$259
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/102:41 pmMFR - ONT
1 stop9h 22mAlaska Airlines
Tue 10/147:43 pmONT - MFR
1 stop15h 33mAlaska Airlines
Deal found 9/16$260
This Alaska Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:39 pmMFR - ONT
1 stop4h 30mAlaska Airlines
Fri 11/146:00 amONT - MFR
1 stop5h 30mAlaska Airlines
Deal found 9/16$262
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/102:13 pmMFR - ONT
1 stop3h 27mUnited Airlines
Tue 10/141:53 pmONT - MFR
1 stop6h 36mUnited Airlines
Deal found 9/16$265

Cheapflights Fare Finder

 
Customize your flight search to find flights from Medford to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Medford to Ontario that are best for you.

Fly from

Medford

Fly to

Ontario

Route

Depart

Return

Price

MedfordOntario

MFR - ONT

MFRONT

Medford

Fri 12/5

11:40 am-5:08 pm

1 stop5h 28m

Ontario

Tue 12/9

5:49 pm-11:31 pm

1 stop5h 42m

$195

MedfordOntario

MFR - ONT

MFRONT

Medford

Tue 10/21

6:00 am-11:08 am

1 stop5h 08m

Ontario

Tue 10/28

6:00 am-4:44 pm

2 stops10h 44m

$200

MedfordOntario

MFR - ONT

MFRONT

Medford

Thu 10/16

6:00 am-11:08 am

1 stop5h 08m

Ontario

Thu 10/23

4:35 pm-11:49 pm

1 stop7h 14m

$246

MedfordOntario

MFR - ONT

MFRONT

Medford

Tue 10/21

5:48 am-12:37 pm

1 stop6h 49m

Ontario

Tue 10/28

6:00 am-11:30 am

1 stop5h 30m

$258

MedfordOntario

MFR - ONT

MFRONT

Medford

Sat 10/11

2:13 pm-5:49 pm

1 stop3h 36m

Ontario

Tue 10/14

1:53 pm-8:29 pm

1 stop6h 36m

$259

MedfordOntario

MFR - ONT

MFRONT

Medford

Fri 11/14

12:39 pm-5:09 pm

1 stop4h 30m

Ontario

Tue 11/18

6:00 am-11:30 am

1 stop5h 30m

$260

MedfordOntario

MFR - ONT

MFRONT

Medford

Thu 11/6

12:39 pm-5:09 pm

1 stop4h 30m

Ontario

Fri 11/14

6:00 am-11:30 am

1 stop5h 30m

$262

MedfordOntario

MFR - ONT

MFRONT

Medford

Fri 10/10

2:13 pm-5:40 pm

1 stop3h 27m

Ontario

Tue 10/14

1:53 pm-8:29 pm

1 stop6h 36m

$265

MedfordOntario

MFR - ONT

MFRONT

Medford

Wed 12/10

1:30 pm-6:32 pm

1 stop5h 02m

$129

MedfordOntario

MFR - ONT

MFRONT

Medford

Wed 10/8

12:02 pm-6:33 pm

1 stop6h 31m

$129

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 20 results
1
2

Best time to book a flight from Medford to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Medford with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Medford to Ontario

What is the cheapest month to book a flight from Medford to Ontario?

Currently, August is the cheapest month in which you can book a flight from Medford to Ontario (average of $246). Flying from Medford to Ontario in March is currently the most expensive (average of $327). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MFR to ONT?

Find hourly flight availability from Medford to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

One of the essential ways to save on airfare from Medford to Ontario is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 24% on airfare.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated September 17, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United Airlines from Medford to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,961 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Food

7.1

Comfort

7.8

Overall

8.0

Boarding

8.1

Crew

8.5

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Medford to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Medford to Ontario?

    For as low as $195, Delta can have you in Ontario from Medford in 5h 28m. Airlines will cover a distance of 641 mi.

  • What are the cheapest airlines flying from Medford to Ontario round-trip?

    Our cheapest airline available from Medford to Ontario is Delta. Our recent data shows that you can find tickets from as low as $218 on this airline. Additional options worth looking into are Alaska Airlines and United Airlines, starting at $237 and $242 round-trip. These flights start at 42% lower than the current average price 3 months from now.

  • Can I find deals for flights from Medford to Ontario that include hotel bookings?

    Yes. In addition to deals on Medford to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Medford to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Medford to Ontario.

  • Can I find deals for business class flights from Medford to Ontario?

    Yes. Cheapflights offers flight deals from Medford to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Medford to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Medford to Ontario (average of $246). Flying from Medford to Ontario in March is currently the most expensive (average of $327). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 3 airlines flying from Medford to Ontario

Discover the top 3 airlines that operate flights from Medford to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$218Average$346FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$237Average$330FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$242Average$375FlexibilityNo cancel feeOn-time69%

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